Machine fob making terminals



Jan. 6, 1948. A. w. HOERNLE 2,434,159

MACHINE FOR MAKING TERMINALS AND THE LIKE Filed Feb. 14, 1945 s Sheets-Sheet 2 INVENTOR ADOLPH' W. HOERNLE ATTORNEY a w E. V g

Jan. .6, 1948. A. w. HOERNL E V MACHINE FOR MAKING TERMINALS AND THE LIKE Filed Feb. 14, 1945. s Sheets-Sheet a IIHHII I mnmmhf INVENTOR w ADOLPH w. HOERNLE BY Z W ATTORNEY Patented Jan. 6, 1948 UNIT!) STATES PATENT OFFICE MACHINE FOR MAKING TERMINALS AND THE LIKE My invention is directed to an improved method and apparatus for making terminals for condensers and other purposes.

One of the objects of my invention is to provide a method and apparatus whereby terminals having heads other than the conventional planar spiral may readily be formed.

Another object of my invention is to provide a machine of the type indicated which may be full automatic in operation, the starting material being taken from a reel or coil and discharged from the machine in finished condition.

Another object of my invention is to provide a machine capable of being operated at high speeds without danger of stoppage due to clogging or breakdown.

Other objects will appear from the description which follows:

In the accompanying drawing:

Fig. 1 is a plan View of one embodiment improved machine;

Fig. 2 is a section taken on the line 22 of Fig. 1;

Fig. 3 is a section taken on the line 3-3 of Fi 1;

Figs. 4, 5, 6 and '7 are fragmentary elevational views of the mechanism provided for bending the wire of the terminal in the initial stages of forming the terminal head;

Fig. 8 is an elevational fragmentary view illustrating the operation of the die mechanism which operates on the terminal head after the operation of the bending mechanism of Fig. 7;

Fig. 9 is a view similar to Fig. 8 illustrating the final die operation;

Fig. 10 is a section taken on the line ll}l of Fig. 8; and

Fig. 11 is a view in perspective of a finished terminal.

Referring to the drawings in detail: 2 designates the wire which is to be formed into terminals such as illustrated in Fig. 11, each terminal comprising a head 4 and shank 6. The head 4, it is to be noted, is of a shape other than the conventional planar spiral. I have illustrated a head that might be referred to as a closed, flattened loop, the plane of which is at right angles to the shank 6, and my improved machine is so constructed that the shank is disposed substantially centrally of this loop.

The wire may be fed through the machine by wire feeding mechanism such as disclosed in my prior Patent 2,293,506 of August 18, 1942, or any other suitable mechanism. This feature constiof my 21 Claims. (Cl. 14071) tutes no part of the present invention and hence will not be described in any detail.

The wire 2, which may be taken from any suitable reel or coil, is fed forward intermittently into or through bore 8 in a stationary bar It] fixed in casing 2. The bore of this bar lies directly in the path of the wire, as will be seen from Fig. 3.

The inner end of the bore 8 is enlarged to receive a mandrel 14, which is a stationary member also. The mandrel is provided with a longitudinal bore l6, aligned with bore 8.

Mounted on bearings i8 concentric with the mandrel l4, and adjacent the inner end of the mandrel, is a gear 20, carrying a rotary bending head 22.

The inner end of the mandrel l4 projects slightly beyond the face of the bending head 22 and is provided with a non-circular reduced portion 24 which, as will be seen from Fig. 4, is the shape of the head 4 to be formed, this reduced portion 24 cooperating with a bending or forming roller 26 rotatably carried on a cam-operated bell crank lever 28 pivoted in the face of the bending head 22, the free arm of this bell crank projecting beyond the periphery of the head 22 as seen in Figs. 4 to 7, inclusive. The lever 28 works against a spring 30 carried in the head 22, and its movement about its pivot under the action of this spring in a direction to swing the roller 26 away from the wire is limited by the rear wall 32 of the depression in the head 22 in which the lever is set.

It is to be appreciated that the function of the roller 26 is to bend the wire 2 into the shape shown, for example, in Figs. 5, 6 and 7 as will be brought out hereinafter.

It is to be understood that the wire 2 is fed forward intermittently as explained in my prior patent above referred to, and comes to rest with the wire projecting from the inner end of the bore 16 in the mandrel l4 beyond the reduced portion 24 of the mandrel, as shown in Fig. 1, and as shown in broken lines in Fig. 3.

In this position the wire is given its first bend, a right angle bend, by a bending arm 34 which is pivoted. at 36 and cooperates with a cam 38 on driven operating shaft 40 which moves the arm across the face of the bending head transversely of the projecting portion of the wire. It will be seen from the drawings that if the arm 34 is pivoted anticlockwise from the position shown in Fig. 1 to the position shown in Fig. 4, the projecting portion of the wire 2 will be bent downwardly to the position shown in Fig. 4.

As above pointed out, the mandrel I4 is staa lever pivotally mounted in the face of said head, and a roller carried thereby, and a cam for actuating said lever to bring the roller into engagement with the wire to bend the wire about said reduced portion of the mandrel as said bending head is rotated.

3. In a machine for making wire terminals having a shank and an integral head, the combination of a rotatable bending head, a fixed mandrel concentric with and extending through and projecting from the face of said head, a lever pivoted to said head, a wire-engaging roller carried thereby, and a cam for pivoting said lever, thereby to vary the position of said roller relatively to a length of Wire projecting from the mandrel to bend the same into a shape other than circular.

4. In a machine for making wire terminals having a shank and an integral head, the combination of a rotatable bending head, a fixed mandrel extending through said head and projecting from the face thereof, said mandrel being concentric with the head and provided with an axial bore for the passage of terminal wire therethrough, a bell crank lever pivoted to the face of the said bending head and movable transversely thereof, one arm of said lever projecting beyond the periphery of the head, the other arm of said lever carrying a roller, a slide movable transversely of the machine and carrying a roller at its inner end, and a cam adapted to engage the outer end of said slide to effect intermittent engagement of said last named roller with the projecting lever arm to actuate the first named roller into engagement with wire projecting from said mandrel to bend the wire about the projecting end of the mandrel.

5. In a machine for making wire terminals having a shank and an integral head, the combination of a rotatable bending head, a fixed mandrel extending through the same and projecting from the face thereof, said mandrel being provided with an axial bore for the passage of terminal wire therethrough, a bell crank lever set into the face of said head and pivoted thereto, a roller carried thereby eccentric to and in the plane of the projecting end of the mandrel, and a driven cam for actuating said lever during the rotation of the ending head about said mandrel to engage said roller with terminal wire projecting from the mandrel to bend the same in the initial stage of forming the terminal head,

6. In a machine for making Wire terminals having a shank and a closed loop head, the combination of a rotatable bending head, a fixed mandrel extending through and projecting from the face of the bending head, a bending lever movable across the face of the bending head for bending a terminal wire projecting from the mandrel at right angles to the main portion of the wire lying in the mandrel bore, a lever pivoted to the face of the bending head and carrying a roller lying in the plane of the projecting portion of the mandrel, and a cam for actuating said roller into engagement with the said bent portion of the wire, whereby upon continued rotation of the head the wire will be bent into loop form,

'7. In a machine for making wire terminals having a shank and an integral head, the combination of a rotary bending head, a fixed mandrel extending through the same and projecting from the face thereof, said mandrel being provided with an axial bore for permitting of the passage of terminal wire therethrough, a lever pivoted in the face of said bending head, a roller carried thereby adapted to engage wire projecting from the end of said mandrel, and a cam for controlling said roller shaped to engage the roller with the wire during rotation of the head to bendthe wire in an out-of-round closed loop the plane of which is at right angles to the main portion of the Wire.

8. Ina machine for making wire terminals having a shank and an integral head, the combination of a rotatable head, a fixed mandrel extending through and projecting from the face of the head, said projecting portion being reduced in diameter to provide an elongated extension extending transversely of the winding head, the mandrel bore being disposed centrally of said extension, a lever pivoted in the face of said head and a roller carried thereby disposed eccentric to said elongated extension and lying in the plane thereof, and a driven cam controlling said lever to cause the said roller to take a path substantially concentric to the mandrel extension while engaging the wire of the terminal and while said bending head is being rotated.

9. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal partially to form a closed loop, and means for compressing or flattening this loop from the sides thereof comprising a pair of oppositely disposed cam driven die members movable transversely of the wire constituting the terminal shank into engagement with the opposed edges of the loop.

10. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal in a loop the plane of which is at right angles to the wire constituting the terminal shank, a pair of opposed die blocks movable transversely of the terminal shank, cams for effecting such movement of the die blocks, plates carried by one of said blocks for supporting the terminal shank as the die blocks close, and a pair of cam operated die members operable as the die blocks close to engage the opposed edges of the previously formed loop to flatten the loop.

11. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal into a closed loop, the plane of which is at right angles to the wire constituting the terminal shank, and die members movable transversely of the terminal shank for applying lateral pressure to the opposed edges of said loop to flatten the loop.

12. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal into a closed loop, the plane of which is at right angles to the wire constituting the terminal shank, and cam driven die members movable transversely of the terminal shank for applying lateral pressure to the opposed edges of said loop to compress the loop.

13. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal into a closed loop, a pair of die plates movable transversely of the terminal axis simultaneously into engagement with the opposed sides of the closed loop to flatten the same, and cam-actuated pusher bars for effecting the said movement of the die plates.

14. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire ,of the terminal into aclosed loop, a pair of opposed die heads, movable transversely ofthe terminal shank, terminal steadying plates carried therebyand moved into steadying position as the die heads close, and a pair of die plates carried by said heads cam-actuated after the steadying plates have moved into operative position to engage the opposed sides of the loop to flattenthe same. H

15. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means for bending the wire of the terminal into a closed loop, a pair of opposed die heads, cams for actuating said heads transversely of the terminal shank, a pair of opposed die plates carried thereby, cams for actuating said plates ,tolengage' the same with the opposed sides of the closed loop to flatten the same, and cut-01f mechanism thereafter operable to sever the wire to form the terminal shank.

16. In a machine for' making wire terminals composed of a shank and a head, said machine comprising in combination means for bendingthe wire of the terminalinto a closed loop, a pair of opposed die heads, cams for actuating said heads transversely of the terminal shank, a pair of opposed die plates carried thereby, cams for actuating said plates to engage the same with the opposed sides of the closed loop to flatten the same, and cutofi mechanism thereafter operable to sever the wire to form the terminal shank, said cut-off mechanism being carried by said die heads.

17. The method of making an article of wire, said article having a shank and an integral head, said method comprising advancing the wire a predetermined distance in a straight path, coiling the leading end of the advanced wire into an elongated loop the plane of which is at right angles to the wire with the wire disposed substantially centrally of the loop partially to form the article head, again advancing the Wire a predetermined distance, applying pressure inwardly of the loop at opposite edges thereof to flatten the same to complete the head, and severing the wire to form the article shank.

18. In a machine for making wire terminals having a shankand an integral head, the combination of a rotatable bending head, a fixed mandrel concentric with and extending through and projecting from the face of said head, a lever pivoted to said head, a wire-engaging roller carried by said lever, and a cam operable as the bending head is rotated so to pivot said lever that thesaid roller, while in engagement with 19. In a machine for making wire terminals having a shank and an integral head, the combination of a rotatable bending head, a fixed mandrel concentric with and extending through and projecting from the face of said head, said mandrel being provided with an axial bore for permitting the terminal wire to be fed therethrough into position where the wire projects beyond the end of the mandrel, a lever movable across the face of said head for engaging the projecting wire to bend the same out of the axis of the mandrel, a lever pivoted to said head, a wire-engaging roller carried thereby, and a cam for pivoting said lever thereby to move said roller into engagement with the bent portion of the wire further to bend the same into a shape other than circular. f f

. 20. In a machine for making wire terminals having a shank and an integral head, the combination of a rotatable head, a fixed mandrel extending through and projecting from the face of the head, said projecting portion being shaped to provide a non-circular extension, a mandrel bore extending through said extension, a lever pivoted to the face of the said winding head, a roller carried thereby disposed eccentric to said mandrel extension and lying in the plane thereof, and a driven cam controlling said lever to cause the said roller to take a path substantially concentric to the mandrel extension while engaging the wire of the terminal and while said bending head is being rotated.

21. In a machine for making wire terminals composed of a shank and a head, said machine comprising in combination means' for bending the wire of the terminal into a closed loop, a pair of opposed die heads movable transversely of the terminal shank, opposed steadying plates for the terminal carried by the die heads, said plates having V shapedends which move into terminalreceiving and steadying position as the die heads close, a pair of die plates carried by said die heads, and cams for actuating said die plates into position to engage the opposed sides of the loop to flatten the same after the steadying plates have been moved to operative position.

the length of wire projecting from the mandrel will be carried about the mandrel axis in a path other than circular.

ADOLPI-I W. HOERNLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS BINES G. HOFFMAN N REVERIBLE TURBINE ARRANGEMENT FOR COOLING IDLE TUR Fil ed Dec. 31, 1942 Q Q g 3[ i E &

Inven tor:

Georges HoFPmann, i

4 His Attorn ey. 

